Mitsubishi Outlander (2013+). Manual - part 715

TROUBLESHOOTING

LOCAL INTERCONNECT NETWORK (LIN)

54B-5

(2) Turn the ignition switch from the LOCK (OFF) 

position to the ON position.

(3) Check if diagnosis code is set.

Q: Is the diagnosis code set?

YES : 

Replace the sunroof motor assembly.

NO : 

A poor connection, open circuit, or other 
intermittent malfunctions in the LIN bus lines 
between the sunroof motor assembly and 
the ETACS-ECU (Refer to GROUP 00 

− 

How to Cope with Intermittent Malfunction ).

Code No.U0231 RLS LIN timeout <Vehicles with lighting control sensor>

CAUTION

Before replacing the ECU, ensure that the com-
munication circuit is normal.

JUDGMENT CRITERIA

The ETACS-ECU will set diagnosis code No. U0231 
when no signals are received from the lighting con-
trol sensor.

PROBABLE CAUSES

• Faulty lighting control sensor

• Malfunction of the LIN bus

DIAGNOSIS PROCEDURE

STEP 1. Resistance measurement at the lighting 
control sensor connector
(1) Disconnect the connector, and measure at the 

wiring harness side.

(2) Measure the resistance between the lighting 

control sensor connector (earth terminal) and the 
body earth.

OK: Continuity exists (2 

Ω or less)

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Go to Step 2.

STEP 2. Check of open circuit in body earth line 
between lighting control sensor connector (earth 
terminal) and the body earth.

Q: Is the check result normal?

YES : 

The trouble can be an intermittent 

malfunction (Refer to GROUP 00 

− How to 

use Troubleshooting/inspection Service 
Points 

− How to Cope with Intermittent 

Malfunction ).

NO : 

Repair the connector(s) or wiring harness.

STEP 3. Voltage measurement at the lighting 
control sensor connector.
(1) Disconnect the connector, and measure at the 

wiring harness side.

(2) Measure the voltage between the lighting control 

sensor connector (power supply terminal) and the 
body earth.

OK: System voltage

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Go to Step 4.

STEP 4. Check of short to power supply, short to 
earth, and open circuit in BUP1 line between 
ETACS-ECU connector and lighting control 
sensor connector.

Q: Is the check result normal?

YES : 

The trouble can be an intermittent 

malfunction (Refer to GROUP 00 

− How to 

use Troubleshooting/inspection Service 
Points 

− How to Cope with Intermittent 

Malfunction ).

NO : 

Repair the connector(s) or wiring harness.

STEP 5. Check of open circuit in (LIN2-1, LIN2-2 
and LIN2-3) line between ETACS-ECU connector 
and lighting control sensor connector.

Q: Is the check result normal?

YES : 

Go to Step 6.

NO : 

Repair the connector(s) or wiring harness.

STEP 6. Check whether the diagnosis code is 
reset.
Check again if the diagnosis code is set to the 
ETACS-ECU.
(1) Erase the diagnosis code.
(2) Turn the ignition switch from the LOCK (OFF) 

position to the ON position.

(3) Check if diagnosis code is set.

Q: Is the diagnosis code set?

TROUBLESHOOTING

LOCAL INTERCONNECT NETWORK (LIN)

54B-6

YES : 

Replace the lighting control sensor.

NO : 

A poor connection, open circuit, or other 
intermittent malfunctions in the LIN bus lines 
between the lighting control sensor and the 
ETACS-ECU (Refer to GROUP 00 

− How to 

Cope with Intermittent Malfunction ).

Code No.U1109 Column SW LIN timeout

CAUTION

Before replacing the ECU, ensure that the com-
munication circuit is normal.

JUDGMENT CRITERIA

The ETACS-ECU will set diagnosis code No. U1109 
when no signals are received from the column switch 
(column switch ECU).

PROBABLE CAUSES

• Faulty wiper and washer switch

• Malfunction of the LIN bus

DIAGNOSIS PROCEDURE

STEP 1. Resistance measurement at the column 
switch connector
(1) Disconnect the connector, and measure at the 

wiring harness side.

(2) Measure the resistance between the column 

switch connector (earth terminal) and the body 
earth.

OK: Continuity exists (2 

Ω or less)

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Go to Step 2.

STEP 2. Check of open circuit in body earth line 
between column switch connector (earth 
terminal) and the body earth.

Q: Is the check result normal?

YES : 

The trouble can be an intermittent 

malfunction (Refer to GROUP 00 

− How to 

use Troubleshooting/inspection Service 
Points 

− How to Cope with Intermittent 

Malfunction ).

NO : 

Repair the connector(s) or wiring harness.

STEP 3. Voltage measurement at the column 
switch connector.
(1) Disconnect the connector, and measure at the 

wiring harness side.

(2) Measure the voltage between the column switch 

connector (power supply terminal) and the body 
earth.

OK: System voltage

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Go to Step 4.

STEP 4. Check of short to power supply, short to 
earth, and open circuit in BUP1 line between 
ETACS-ECU connector and column switch 
connector.

Q: Is the check result normal?

YES : 

The trouble can be an intermittent 

malfunction (Refer to GROUP 00 

− How to 

use Troubleshooting/inspection Service 
Points 

− How to Cope with Intermittent 

Malfunction ).

NO : 

Repair the connector(s) or wiring harness.

STEP 5. Check of open circuit in DATA line 
between ETACS-ECU connector and column 
switch connector.

Q: Is the check result normal?

YES : 

Go to Step 6.

NO : 

Repair the connector(s) or wiring harness.

STEP 6. Check whether the diagnosis code is 
reset.
Check again if the diagnosis code is set to the 
ETACS-ECU.
(1) Erase the diagnosis code.
(2) Turn the ignition switch from "LOCK" (OFF) 

position to "ON" position.

(3) Check if diagnosis code is set.

Q: Is the diagnosis code set?

TROUBLESHOOTING

LOCAL INTERCONNECT NETWORK (LIN)

54B-7

YES : 

Replace the wiper/washer switch.

NO : 

A poor connection, open circuit, or other 
intermittent malfunctions in the LIN bus lines 
between the column switch and the 
ETACS-ECU (Refer to GROUP 00 

− How to 

Cope with Intermittent Malfunction ).

Code No.U150B Column SW LIN checksum error

JUDGMENT CRITERIA

The ETACS-ECU will set diagnosis code No. U150B 
when abnormal signals are received from the column 
switch (column switch ECU).

PROBABLE CAUSES

• Faulty wiper and washer switch

Code No.U1511 Sunroof ECU LIN checksum error <vehicles with sunroof>

JUDGMENT CRITERIA

The ETACS-ECU will set diagnosis code No. U1511 
when abnormal signals are received from the sun-
roof motor assembly.

PROBABLE CAUSES

• Faulty sunroof motor assembly

Code No.U1512 RLS LIN checksum error <Vehicles with lighting control sensor>

JUDGMENT CRITERIA

The ETACS-ECU will set diagnosis code No. U1512 
when abnormal signals are received from the lighting 
control sensor.

PROBABLE CAUSES

• Faulty lighting control sensor

Code No.U1514 LIN transmission bit error

JUDGMENT CRITERIA

The ETACS-ECU receives and sends data simulta-
neously. If the data contains a fault, the ETACS-ECU 
will set diagnosis code No. U1514. 

PROBABLE CAUSES

• Malfunction of the slave ECU

• Malfunction of the ETACS-ECU

• Electrical noise generated in the LIN bus lines

TROUBLESHOOTING

LOCAL INTERCONNECT NETWORK (LIN)

54B-8

Code No.U1515 No bus activity error for LIN

CAUTION

• Before replacing the ECU, ensure that the 

power supply circuit, the earth circuit and the 
communication circuit are normal.

• When the ETACS-ECU of vehicles without 

KOS is replaced, the encrypted code of the 
ignition key needs to be registered to the 
ETACS-ECU. (If the encrypted code is not reg-
istered, the engine cannot be started. Regis-
ter the encrypted code as described in 
GROUP 54A, Immobilizer System 

− How to 

Register Key ID .)

TROUBLE JUDGMENT

The ETACS-ECU will store diagnosis code No. 
U1515 when no communication has been carried out 
for more than a certain period after it received last 
valid data.

PROBABLE CAUSES

• Malfunction of the ETACS-ECU

• Malfunction of the slave ECU

• LIN bus lines shorted to power supply

• LIN bus lines shorted to earth

DIAGNOSIS PROCEDURE

STEP 1. Measure the voltage at the LIN bus lines.
Check the LIN bus lines for short to power supply.
(1) Disconnect all the connectors which are 

connecter to the LIN bus lines.

(2) Turn the ignition switch from "LOCK" (OFF) to 

"ON" position.

(3) Measure the voltage between the column switch 

connector (power supply terminal) and the body 
earth.

• The voltmeter needle does not swing.

NOTE: If the LIN bus lines are short to power 
supply, the voltmeter indicates a constant value.

(4) Measure the voltage between the sunroof motor 

assembly connector (power supply terminal) and 
the body earth. <vehicles with sunroof>

• The voltmeter needle does not swing.

NOTE: If the LIN bus lines are short to power 
supply, the voltmeter indicates a constant value.

(5) Measure the voltage between the lighting control 

sensor connector (power supply terminal) and the 
body earth. <vehicles with lighting control 

sensor>

• The voltmeter needle does not swing.

NOTE: If the LIN bus lines are short to power 
supply, the voltmeter indicates a constant value.

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Repair the connector(s) or wiring harness.

STEP 2. Measure the resistance at the LIN bus 
lines.
Check the LIN bus lines for short to earth.
(1) Disconnect all the connectors which are 

connecter to the LIN bus lines.

(2) Measure the resistance between the column 

switch connector (earth terminal) and the body 
earth.

• No continuity (1 kΩ or more)

(3) Measure the resistance between the sunroof 

motor assembly connector (earth terminal) and 
the body earth. <vehicles with sunroof>

• No continuity (1 kΩ or more)

(4) Measure the resistance between the lighting 

control sensor connector (earth terminal) and the 
body earth. <vehicles with lighting control 
sensor>

• No continuity (1 kΩ or more)

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Repair the connector(s) or wiring harness.

STEP 3. Check the column switch.
Disconnect column switch connector, and recheck 
whether diagnosis code No. U1515 is set.
(1) Connect all the relevant ECUs, and disconnect 

column switch connector only.

(2) Erase the diagnosis code.
(3) Turn the ignition switch from "LOCK" (OFF) to 

"ON" position.

(4) Check whether diagnosis code No. U1515 is set.

NOTE: If diagnosis code No. U1515 is not set, 
diagnosis code No. U1109 is set because the col-
umn switch is disconnected. This is normal.

(5) Turn the ignition switch to the "LOCK" (OFF) 

position.

Q: Is diagnosis code No. U1515 set?

YES : 

Reconnect the column switch connector, 

and go to Step 4.

NO : 

Replace the wiper/washer switch.